Rolling-mill



J. G. LAURIE.

ROLLING MILL.

(No Model.)

No. 343,643. Patented June 15, 1886.

|lngulllmminmuunufffinnun UNITED STATES 4PATENT OFFICE.,

JOHN G. LAURIE, OF SOUTH CHICAGO, lLLINOIS.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 343,643, dated June 15, 1886.

Application tiled December 10, 1885. Serial No. 185,316. (No model.)

j .To all whom, it may concern.-

Be it known that I, JOHN G. LAURIE, a citizenof the United States, residing at South Chicago, in the county of Cook and State of Illinois, have invented a new and useful ImprovementinThree-HighBoll Mills,to be used in rolling and making rails, beams, bridge or merchant iron or steel, of which the following is a specification.

My invention relates to an improvement in said Vmill l One of the benelits andthe improvement in my invention is, first, to provide that the engine operating the mill may be run without the necessity of reversing the action of the engine; and, second, to split the collar of the rolls on an angle, and making the male and female collar on each collar of rolls for threehigh mills, and making the joints of rolls at diagonal corners of the section, so that the collar may be cut away when necessary to reduce the pass of the rolls to proper size when it has become enlarged by use. I attain these -objects by the mechanism illustrated in the accompanying drawings.

Figurelrepresentsa front view ofthe threehigh mill or rolls, wherein A A A represent the lower roll, B the middle roll, and C the top roll. Said rolls are made of solid cast-irou, or a mixture of steel and cast-iron. Such rolls areV of different sizes, according to size of mill. Fig. 2 represents the end view of the rolls, showing that they are circular. Fig. 3 is a sectional View through pass f, showing the angle at which the pass is turned.

d ef g h h represent the passes between the rolls through which the bar to be rolled is passed. 'The bar to be rolled is first put in the pass at d and run successively through passes e, f, g, and 'h 7L. The rolls revolving in the same direction carry the bar to the opposite side of the mill, where it is lifted to the pass e, between the top and middle roll, and those rollsvrevolving in the same direction carry the'bar back to the other side of the mill, and thus through the ive passes. The line marking the division between the upper and middleroll is theline commencing ati,11toj,

j to k, k to Z, Z to m, m to n, n to 0,0 top,pto q, 1 to r, r to s, sto t,t to uga to 11,12 to 10,10 to 00,96 to y, y to z, e to a', e to z2, z2 to a3, z3 to z, z* to z5, e

to z", the line marking the division between the middle and top rolls being similar to the other.

come on diagonal corners, so that the collars extend beyond and cover the whole face or sides of the pass. By splitting the collar diagonally q to r, r to s, s to t and making the male and female collar on each collar of rolls, as shown in the drawings, the rolls may be put on a lathe after the pass is so enlarged and the collars cut down on the lathe until the passes of rolls are reduced to their original size.

The collar is split, A A A and C C C being female collars, and B B B being male g collars, so that the male and female collars This operation may be repeated until therolls become toosmall for use. The rolls are supported and run on journals D in the ordinary way.

E represents the driving parts, called in mill terms a wabblerJ vThe rolls are elevated and lowered in the usual way after the collars are cut away by the lathe, so as to bring the rolls together in their original position.

The mill is driven by an engine in the saine manner as other mills.

I am aware that prior to my invention rolling-mills for rails, beams, bridge or merchant iron have been made,and one especially by Euglish Patent No. 978 of 1858; but my invention differs materially from said English patent. The rolls in that patent, although split so that the upper and lower rolls extend into the cen ter roll, and thus form a joint, are not split as mine are. rlhe iron in going through the pass enlarges it sidewise, but not on the bottom and top. In the English patent the joints are square across, and the straight sides of the pass are on the same roll, so that when the pass becomes enlarged sidewise by use there is no way to bring it back to its original size. The pass is worn sidcwise and cannot be brought to its originalshape. In myinvention the joints are on diagonal corners,as shown in my drawings, and on opposite rolls at each pass, the large collar at each pass being onaslight angle. The straight sides of the passes are formed by eollars on opposite rolls, and not on the same roll, as inthe English patent, the large collars being on opposite rolls and turned at a slight angle. By this means, after the pass becomes turned at all in changing the rail from one pass to the other in runningr the rail through the mill. turned one-half around at every pass. in my patent I save the labor and the time of turning the rail.

This could not be y ln the English patent the rail must be y Thus What I claim as my invention, and desire to secure by Letters Patent, is-

In thre-high-roll mills for rolling rails, girders and t-he like, constructing the collars ot'one so that they shall overlap the collars of the adjacent roll by obliqnely-opposing surfaces, while the broad vertical surfaces of the collars on their opposite sides shall constitute severi ally lateral walls of the passes, and which lateral walls of the passes shall be on opposite rolls at each pass.

JOHN G. LAURIE.

Witnesses:

JOHN M. ARMSTRONG, WM. W. GURLEY. 

